[svlug] Re: Mounting the same LVM2 volume group twice.

[Scott Hess]

On Tue, 11 Jan 2005 23:19:09 -0800, Scott Hess <scott.hess at gmail.com> wrote:
> Let's say that I have two drives with default Fedora Core 3 installs.
> So both have / and swap on LVM.  There's a pv on partition 2,
> containing a vg VolGroup00, which contains lgs LogVol00 (/) and
> LogVol01 (swap).
> 
> Now, say that I want to mount _both_ of them at once.  Perhaps I'm
> booting from one, and want to mount the other.  What seems to happen
> for me now is that I see whichever one I booted from, but I don't see
> anything at all from the other disk.  No errors, either.

What I Ended Up Doing (Perhaps Paraphrased):

# Boot the fedora rescue cd.
lvm vgrename VolGroup00 VolGroup02
lvm vgscan
lvm vgrename VolGroup00 VolGroup01
lvm vgrename VolGroup02 VolGroup00
reboot # And remove the CD

On reboot, I could mount /dev/VolGroup01/LogVol00, and away I go.  I
suspect that, just for grins, I may decide _not_ to rename it back to
VolGroup01.  I'm sure that will break some future upgrade :-).

-scott